<template>
  <header class="header">
    <h1>todos</h1>
    <input id="toggle-all"
    class="toggle-all" 
    type="checkbox" 
    v-model="isAll"/>
    <label for="toggle-all" ></label>
    <input
      class="new-todo"
      placeholder="输入任务名称-回车添加"
      autofocus
      @keydown.enter="enterFn"
      v-model="task"
    />
  </header>
</template>

<script>
export default {
  props:['list'],
  data() {
    return {
      task: "",
    };
  },
  computed:{
    isAll:{
      set(val){
        this.list.forEach(item => item.isDone = val)
      },
      get(){
        return this.list.every(item => item.isDone)
      }
    }
  },
  methods: {
    enterFn() {
      if (this.task.trim() === "") {
        alert("你猜猜harry让不让你这样写");
        return;
      }
      // console.log('*arry 任务名是：' + this.tesk);
      this.$emit("addTask", this.task);
      this.task = "";
    },
  },
};
</script>